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Ultra-high temperature and radiation resistant liquid level control cables

A liquid level control, radiation-resistant technology, used in insulated cables, cables with double-stranded/quad-stranded, thermometer applications, etc., can solve the accelerated aging process, embrittlement cracking, hardness or compression resistance Modulus increases and other problems, to achieve the effect of a large operating temperature range

Active Publication Date: 2019-05-31
王筱卿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the environment of high temperature, high radiation resistance and corrosion, the aging process of organic materials is accelerated sharply, resulting in changes in the physical, mechanical and electrical properties of materials, such as reduced elongation, weakened tensile strength, increased hardness or compressive modulus, density Increase and dielectric loss increase, insulation performance reduction, etc., and even embrittlement and cracking, which pose a huge threat to the safety of cable application sites
Assessing the life of cables in applications currently has no viable solution

Method used

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Experimental program
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Effect test

Embodiment 1

[0041] According to the embodiment of the present invention, the preparation of an ultra-high temperature resistant and radiation resistant liquid level control cable is as follows:

[0042] 1. Preparation of inorganic composite insulating materials:

[0043] 0.05wt% of gas-phase precipitated silicon oxide particles with a purity of more than 99.999% and an average particle size of 80nm-50μm; 0.08wt% of silicon nitride particles with a purity of more than 99.999% and an average particle size of 80nm-50μm; More than 99.999% of high-purity fused magnesium oxide particles with an average particle size of 30nm-80μm are used for batching.

[0044] Fully mix vapor-phase precipitated silicon oxide and silicon nitride particles and put them into a container for high-temperature firing (900°C×2.5h). After cooling, add the above-mentioned high-purity fused magnesium oxide powder, stir and mix evenly to obtain an inorganic composite insulating material .

[0045] Inorganic composite in...

Embodiment 2

[0058] The ultra-high temperature resistant, radiation-resistant liquid level control cable that adopts embodiment 1 to make is carried out liquid level detection control (referring to figure 2 ), the heating element works at 2.5A, and the heating temperature is about 600°C. When the liquid level in the container is at the upper limit (that is, when the liquid level reaches the upper temperature measuring point), part of the upper limit heating element E1 and the lower limit heating element E1 and the lower limit temperature measuring component D are all immersed in the liquid. Due to the small heat capacity of the heating element, At this time, the temperature at the upper limit temperature measuring point is close to that of the liquid, and the liquid replenishing mechanism is controlled to stop injecting liquid into the container. When the liquid level is lower than the lower limit (that is, when the liquid level is lower than the lower temperature measurement point), the ...

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Abstract

The invention relates to an ultra-high temperature resistant and radiation resistant liquid level control cable and a preparation method thereof. The ultra-high temperature resistant and radiation resistant liquid level control cable comprises an upper limit temperature measuring component, a lower limit temperature measuring component, an upper limit heating element, a lower limit heating element, a wire, an alloy protection layer and an inorganic composite insulation layer which wraps the upper limit temperature measuring component, the lower limit temperature measuring component, the upperlimit heating element, the lower limit heating element and the wire, and is arranged in the alloy protection layer as filler. The ultra-high temperature resistant and radiation resistant liquid levelcontrol cable has the advantages of being wide in work temperature range, high in corrosion resistance, high and low temperature resistance, shock resistance, pressure resistance, nuclear resistance and radiation resistance, resistant to explosion, low in loss, low in capacitance, low in noise and high in shielding.

Description

technical field [0001] The present invention relates to the field of automation instruments and meters, and more specifically relates to an ultra-high temperature resistant and radiation resistant liquid level control cable with special requirements such as intelligence, high precision, high reliability, large range, corrosion resistance, full sealing and explosion protection. . Background technique [0002] The cables currently used in nuclear power, petrochemical, iron and steel smelting and other fields are organic insulated cables. The organic insulating materials are polyethylene, polyvinyl chloride, cross-linked polyolefin, silicone rubber, fluoroplastic, vinyl or propylene. rubber. In the actual application environment, polymer materials such as organic insulation and sheath of cables will undergo various irreversible chemical aging and physical aging over time. In the environment of high temperature, high radiation resistance and corrosion, the aging process of org...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B11/06H01B11/12H01B7/29G01K13/10
CPCG01K13/10H01B7/29H01B11/06H01B11/12
Inventor 王筱卿姚家驹
Owner 王筱卿
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